1295 questions and answers in this section
Explain why is the city of Jericoacoara (in Brazil) surrounded by immense sand dunes?

Explain why is the city of Jericoacoara (in Brazil) surrounded by immense sand dunes?

The village of Jericoacoara is located in northeastern Brazil, in the state of Ceará, bordered by the Atlantic Ocean. Nestled on an isolated peninsula, it...

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Explain why the city of Dhaka (in Bangladesh) experiences extreme flooding?

Explain why the city of Dhaka (in Bangladesh) experiences extreme flooding?

Dhaka is located in a very vulnerable spot, right in the heart of the delta formed by three major rivers: the Ganges, the Brahmaputra, and...

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Explain why were the ancient Egyptian astronomers fascinated by Sirius?

Explain why were the ancient Egyptian astronomers fascinated by Sirius?

In ancient Egypt, Sirius was a true star of the night sky. It is the brightest star seen from Earth, easy to spot even without...

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Explain why Pluto is no longer considered a planet.

Explain why Pluto is no longer considered a planet.

Pluto was discovered in 1930 by American astronomer Clyde Tombaugh. At the time, it was the ninth planet, right after Neptune, at the edge of...

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Explain why the Moon always has the same hidden side.

Explain why the Moon always has the same hidden side.

The Moon rotates on its axis at exactly the same rate that it orbits the Earth. This is called synchronous rotation. Basically, it takes about...

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